Wa1

• Wind turbine operation

  Wind energy is converted to KE of the turbines, KE of the moving turbines is converted to EE, EE is acquired
• Geothermal Energy conversion


  Cold water pumped into Earth's core heats and evaporates into steam, Heat Energy (HE) from Earth's core is converted to steam, Steam powers turbines generating electricity, Kinetic Energy (KE) of steam is converted into KE of turbines and then into EE
• Power Station operation


  CPE from fossil fuel is burnt to produce HE, HE powers turbines converting HE to KE and then to EE, EE is being produced and acquired
• Types of energy


  • Gravitational Potential Energy
  • Chemical Potential Energy
  • Elastic Potential Energy
  • Electrical Energy
  • light energy
  • sound energy
  • heat energy
  • kinetic energy
  • nuclear energy
• A force applied causes an object to move in the direction of the force, resulting in a transfer of energy
• Electricity generation from moving turbines

  Moving turbines generate electricity, Kinetic Energy (KE) of turbine is converted to Electrical Energy (EE)
• Hydroelectric Power Station operation

  Gravitational Potential Energy (GPE) from water stored behind the dam is converted to KE as water moves, KE from moving water is converted to KE in turbines, KE from moving turbines is converted to EE, EE is acquired
• Pressure is the amount of force acting on an object, depending on the weight of the object and the surface area in contact
• Nuclear Energy conversion

  Heavy atom splitting into smaller atoms releases heat, Nuclear Energy (NE) is converted to HE, HE powers turbines converting HE to KE, turbines generate electricity, KE is acquired as Electrical Energy (EE)
• Energy cannot be created or destroyed, only converted or transferred. Total energy remains constant throughout the movement
• Drinking from a straw and suction cup sticking onto a wall work due to differences in air pressure
• Solar panels operation

  Solar panels capture Light Energy (LE) from the sun and convert it to EE, EE is being acquired
• Biofuel conversion


  Chemical Potential Energy (CPE) in biofuel is burnt into Heat Energy (HE), HE is used to move the car converting HE into Kinetic Energy (KE)
• When energy is transferred, work is done through the application of force
• Atmospheric pressure is higher at sea level than at higher altitudes
• Transfer of energy may change the shape and size of an object
• SI unit for pressure

  • Pascal (Pa)
• Atmospheric pressure
• Forces that are acting between two objects in physical contact
• Transfer of energy

  May change the shape and/or size of an object, such as a balloon
• The deeper the water is

  More pressure is present
• In the periodic table, the bigger number is the sum of protons and neutrons, while the smaller number is the proton amount
• Forces that are acting between two objects not in physical contact
• Number of protons must equal the number of electrons in an atom
• Pressure


  Amount of force acting on an object. The pressure depends on the weight of the object and the surface area in contact
• Non-contact forces

  • Gravitational force, Magnetic force